public enum SingeltonEnum {
    SINGELETON;

    public static void dosomething() {

    }

    public static void main(String[] args) {
        SingeltonEnum singeleton1 = SingeltonEnum.SINGELETON;
        SingeltonEnum singeleton2 = SingeltonEnum.SINGELETON;
        System.out.println(singeleton1 == singeleton2);
    }
}
